kib 2007-02-07 10:30:49 UTC
FreeBSD src repository
Modified files:
sys/fs/procfs procfs.c
Log:
Fix the race of dereferencing /proc/<pid>/file with execve(2) by caching
the value of p_textvp. This way, we always unlock the locked vnode.
While there, vhold() the vnode around the vn_lock().
Reported and tested by: Guy Helmer (ghelmer palisadesys com)
Approved by: des (procfs maintainer)
MFC after: 1 week
Revision Changes Path
1.15 +11 -3 src/sys/fs/procfs/procfs.c
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